Deep-well-drilling apparatus



1,636,667 y 1927' c. E. REED DEEP WELL DRILLING APPARATUS Filed Jan. 12,1927 2 Shoots-Sheet 1 C/arence E. Reed INVENTOR.

7 1,636,667 July 1927' c. E. REED DEEP WELL DRILLING APPARATUS FiledJan. 12, 1927 2 Sheets-Sheet 2 F/lg. 2.

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C/ar'ence Z/Qeed INVENTOR.

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Patented July 19, 1927.

UNITED STATES CLARENCE E. REED, OF WIGHITA, -KANSA S.

DEEP-WELl'a-DBILLING APPARATUS Application filed January 12, 1927.Serial No. 100,868.

My invention relates to earth boring drills, particularl means forassembling and securely hol in the parts of a roller boring drill usedin rilling deep wells.

One object of my invention is to provide a cutter and bearing assemblycapable of insertion into a bit head, having an inverted V shape recessat one end, the bit head being a one piece casting or forglng.

Another object is to obtain ample strength to resist thrusts, which areuniversal in direction when considered over the range of operationsentering the bore, sinking the well and removal of the tool from thebore hole.

Another object is lubrication of the parts when oil lubrication isdesirable.

The invention consists in the features and combination and arrangementof parts hereinafter described and pointed out in the claims.

In the drawings Fig. 1 is a view partly in section on the center lineand partly a side view of a, ortion of a bit embodying the invention. neside of this-figure shows the roller and bearing in dotted outline andmeans for lubrication. Fig. 2 is a sectional view on two planes taken onthe line A A of Fig. 1. Fig. 3 is a view of the bearing looking into thesocket of the ring section on the line of the axis of the roller. Fig. 4is a view of the base or side of the roller. Like numerals of referenceare used to designate like parts in all the views.

In these drawings 1 represents the lower portion of the bit head; 2 isthe bearing; 3 is the roller; 4 is the lock; 1 is an angle face on thebit head; 1 is a seat recess in the face of one side of the V; 1 is acentrally disposed flushing fluid passage way; 1 represents an integralprojecting portion of the bit head between the bases of the frustoconical rollers; 1 is a recess in the side of the bit head to permitinsertion of the lock 4; l is a hole in the angle face 1 for insertionof the shank 2 of the bearing 22".

The bearing member 2, is split on the center I line and the halves aredesignated 2 and 2". 2 is the shank of the bearing; 2 is the baseportion; 2 is the bearing face of the ring section; 2 is the socket orrecess within the ring section of the bearing. The dotted line 2represents under-cutting of the ring section of the bearing to anoutline corresponding to the shape 0 the flan e 3 on the roller. 3 isthe-roller, and this r0 ler may be either an integral one piece rolleror it ma be formed in two or more sections, the dividing lines of whichare indicated by 3. 3" is the stem of the roller; 3 is a flange on thestem. This flange may be formed either beveled as shown orcylindricaland rectangular in cross section; 3' represents the groove inthe base or side of the roller. The flange 3 is cut away on one side ofa diametrical line as indicated by 3. If the. flange and groove are madecylindrical instead of tapering as shown in the drawings, the flangewould be cut awa' on one side to correspond to the dotted line 3* asthat line a pears on Fig. 4 on the same side of the iameter as the fullline 3.

The lock 4 is formed with guideways and lugs, corresponding to similarshaped guidewags and lugs on the end of the shank 2 an in assem lin thelock is rotated a quarter turn, which rings the lugs of the lock 4 underthe corresponding lugs on the shank 2, and in this assembled conditionis held b retaining means, not shown, inserted in tile guideways. Asthis lock in combination with a bearing is the subject matter of anotherapplication, it is not further described herein.

This invention may be used either as a slush lubricated bit or with oillubrication. If oil lubrication is to be used, I prefer to use a hollowstem (cavity f) on the cone, a conduit g) in the shank of bearing,plunger (h) in the conduit and above the plunger a vent (i) to thecentral flushing fluid passage way (1). The pump pressure automaticallyfeeds the lubricant to the'bearing surfaces through the outlets (j).

The cavity within the roller is indicated in dotted outline at f, theconduit within the bearing is g; plunger IL, vent z, and the outlets j,all in Fig. 1.

The cutters, of course, are formed with teeth as is usual todisintegrate the bottom of the hole as the drill is rotated One form oftooth is shown on the section of cone in Fig. 1 of the drawings.

.In operation the roller will be assembled with the bearing byinserting, the ring portion of one-half of the bearing within the groove3. This isreadily done by passing half of the ring portion of thebearing over the flange portion 3'. After seating the ring in the groovethe roller is rotated a half turn and the other half of the bearing 2 isinserted in the groove in the same manner. The two halves of the bearingwhen assembled with the cone fit close together. Thering section of thebearing completely fills the groove 3' in the cone and closely surroundsthe stem 3" and the flange 3 and securely holds the roller for rotationon the bearing 2" and against longitudinal movement. The roller andbearing assembled as a unit, the shank 2 is inserted in the bore 1 ofthe head, the base portion 2 of the bearing seating against the an leface 1 in the recess 1 of the head. The Iock 4 is then inserted throughthe recess 19 and secured to the end of the shank by a quarter turn,

.which securely locks the two piece bearing together in the bit head.

When it is desired to use oil lubrication the plunger is inserted in theconduit g and the cavity 7 and the conduit 9 are filled with lubricantbefore assembling in the usual way. In operation the pressure of thefluid in the central passage way 1 will automatically,

- through the vent 2', force the plunger h to feed the lubricant to thebearing surfaces.

' through the outlets j.

' The apparatus shown is presented herein as illustrative of theinvention and not as a limitation upon its scope, which is defined bythe appended claims.

: I claim as my invention:

. 1. In combination in a roller boring drill including a head having aV-shaped recess at the lower end thereof, a cutter or anizationcomprising a frusto-conical roller having an integral stem and a flangeintegral with said stem thereon, a socket bearing including a ringsurrounding the said stem and flange of the roller cutter, the saidbearin seating in a recess in the face of the V an said bearing having ashank projecting at an angle to the axis of the roller, the said cutterorganization being handled as a unit for insertion in the V-shapedrecess, and means to lock the shank in the body.

2. In a drill, a roller provided with an integral stem with an integralflan 'e there on, both within the plane bounding the roller, and asectional bearingwith an integral-collar surrounding said stem andflange, the flange being partly cut away to permit insertion of onesection of the bearing at a time into the groove in the" roller, theroller in assembled position being securely held for rotation on thecollar.

3. In an earth boring drill, the combination of a roller with a stem andflange, a bearing fitting within the roller and filling being cut awayto provide a gate, and a bearing for said roller split lengthwise toprovide two sections, each of WhlCh sections has a flange adapted topass into the groove of the roller by way of said gate, and fit underthe'flange of the stem of the roller, a bit head and means for holding'the sections of the bearing to said head, substantially as described.

5. In an earth boring drill a roller cutter having a stem within itwitha oove between said stem and thesurroun ing body of the roller, saidstem at its end havinga flange overhanging the groove, said flange beingcutaway to provide a ate and a bearing for said roller split lengthwiseto provide two sections, each of which sections has a flange adapted topass into the groove of the roller by way of said gate, and fit underthe flange of the stem of the roller, a bit head and means for holdingthe sections of the bearing to said head, the flanges of the sectionalbearing filling the groove within the roller cutter below the flange ofthe stem, substantially as described.

I 6. In an earth boring drill a roller cutter having a stem within itwith a oovebetween said stem and the surroun ing body of the roller,said stem at its end having a flange overhanging the groove, said flangebeing cut away to provide a gate and a hearing for said roller splitlengthwise to provide two sections each of which sections has a flangeadapted to pass into the groove of the roller by way of said gate, andfit under the flange of the stem of the roller, a bit head and means forholdin the sections of the bearing to said head, the flanges of the.sections of the bearing when in place against each other present afrusto-conical outer surface, the outer wall of the groove of the rollercutter being of like form, substantially as described.

7. In a drill, an integral flange so shaped on a stem within a rollerthat the bearing on which the roller turns may be inserted to fill thegroove within the roller below the flange and thus hold the roller tothe bearing for rotation thereon, the bearing having a shank at an angleto the axis of its spindle.

8. In an earth boring drill a roller cutter and bearing held together byinterfitting flanges respectively integral with said parts, said flangesbeing so shaped as to permit said roller'to be removed from the bearing,said roller having a bore which is filled below the shaped as to permitinterfitting within the flange thereon by the intrfittin part of theroller, and filhng the bore therein below the bearing, the body ofroller close y contacting flange, the bearing having a shank extendingthe exterior area of the hearing within the beyond the roller forholding the roller to 5 bore, substantially as described. the bit head,substantiall as described.

9. In a drill, a roller and bearin held to- In testimony whereof, aflixmy si ature. gether by interfitting integral anges so CLARENCE E. R ED.

